Solar Trough Mirror Shape Specifications
Lüpfert, Eckhard and Ulmer, Steffen (2009) Solar Trough Mirror Shape Specifications. SolarPACES 2009, 15.-18. Sept. 2009, Berlin.
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Official URL: http://www.solarpaces2009.org
The performance of concentrating solar collectors depends to a significant amount on the shape accuracy of the mirrors reflecting the sunlight onto the absorber. For the case of parabolic trough mirrors and on the basis of previous work on shape measurements and ray-tracing, a quality parameter has been defined, that quantifies the average deviation of the reflected beam from the design focal line. It could be demonstrated that application of standard distribution (Gauss distribution) is sufficiently related to derive the performance relevant intercept factor from it. As objective for the glass reflector for high performance trough collectors a typical value for the focus deviation RMS in transversal direction is about 15% of the absorber diameter.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||Solar Trough Mirror Shape Specifications|
|In ISI Web of Science:||No|
|Keywords:||parabolic trough, mirror, intercept factor, optical efficiency, deflectometry, shape|
|Event Title:||SolarPACES 2009|
|Event Type:||international Conference|
|Event Dates:||15.-18. Sept. 2009|
|HGF - Research field:||Energy|
|HGF - Program:||Renewable Energies|
|HGF - Program Themes:||E SF - Solar research|
|DLR - Research area:||Energy|
|DLR - Program:||E SF - Solar research|
|DLR - Research theme (Project):||E - Qualifizierung (old)|
|Institutes and Institutions:||Institute of Technical Thermodynamics > Solar Research|
|Deposited By:||Dr.-Ing. Eckhard Lüpfert|
|Deposited On:||08 Feb 2010 16:57|
|Last Modified:||08 Feb 2010 16:57|
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